Question

Caesar Cipher problem.
I spend almost 6 hours to code
def build_decoder(shift): I am stuck. can anybody help me out?

Answer 1

My code is here but still producing same thing as encoder
UPPER = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ '
LOWER = 'abcdefghijklmnopqrstuvwxyz '
decoder = {}
encoder = build_coder(shift).copy()
for deUP in UPPER:
decoder[deUP] = encoder.get(deUP)
return decoder

Answer 2

Hi,

This is what I have for this code:

decoder = {}
encoder = build_encoder(shift)
encoder_keys = encoder.keys() #This creates a list containing the keys in the encoder
encoder_values = encoder.values() #This creates a list containing values in the encoder
for i in range(len(encoder_keys)):
decoder[encoder_values[i]] = encoder_keys[i] #switches the key value pairs
return decoder

Hope that makes sense.